GB2082018B - Telephone sounder - Google Patents

Telephone sounder

Info

Publication number
GB2082018B
GB2082018B GB8025123A GB8025123A GB2082018B GB 2082018 B GB2082018 B GB 2082018B GB 8025123 A GB8025123 A GB 8025123A GB 8025123 A GB8025123 A GB 8025123A GB 2082018 B GB2082018 B GB 2082018B
Authority
GB
United Kingdom
Prior art keywords
sounder
telephone
telephone sounder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8025123A
Other versions
GB2082018A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB8025123A priority Critical patent/GB2082018B/en
Publication of GB2082018A publication Critical patent/GB2082018A/en
Application granted granted Critical
Publication of GB2082018B publication Critical patent/GB2082018B/en
Priority to SG81384A priority patent/SG81384G/en
Priority to HK55587A priority patent/HK55587A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Telephone Set Structure (AREA)
GB8025123A 1980-07-31 1980-07-31 Telephone sounder Expired GB2082018B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8025123A GB2082018B (en) 1980-07-31 1980-07-31 Telephone sounder
SG81384A SG81384G (en) 1980-07-31 1984-11-14 Telephone subscriber's instrument with a tone sounder
HK55587A HK55587A (en) 1980-07-31 1987-07-30 Telephone subscriber's instrument with a tone sounder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8025123A GB2082018B (en) 1980-07-31 1980-07-31 Telephone sounder

Publications (2)

Publication Number Publication Date
GB2082018A GB2082018A (en) 1982-02-24
GB2082018B true GB2082018B (en) 1983-10-12

Family

ID=10515183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8025123A Expired GB2082018B (en) 1980-07-31 1980-07-31 Telephone sounder

Country Status (3)

Country Link
GB (1) GB2082018B (en)
HK (1) HK55587A (en)
SG (1) SG81384G (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ203265A (en) * 1982-02-26 1985-04-30 Gen Electric Co Plc Electroacoustic transducer with attenuating shutter
GB2168875A (en) * 1984-12-19 1986-06-25 Philips Electronic Associated Electroacoustic calling device

Also Published As

Publication number Publication date
GB2082018A (en) 1982-02-24
SG81384G (en) 1987-07-03
HK55587A (en) 1987-08-07

Similar Documents

Publication Publication Date Title
GB2111800B (en) Telephone sets
JPS57112199A (en) Microphone
GB2107554B (en) Telephone line circuit
JPS56132847A (en) Telephone channel
GB2073982B (en) Receiver
GB2087686B (en) One piece telephone
JPS572150A (en) Electron ringing unit
JPS5787690A (en) Subscriber circuit
DE3264570D1 (en) Telephone set
JPS56141647A (en) Telephone receiver
GB2088171B (en) Public telephone set
GB2082018B (en) Telephone sounder
GB2107153B (en) Telephone autodiallers
GB2082420B (en) Telephone systems
GB2105946B (en) Telephone
GB2081486B (en) Telephone bell assembly
IL63774A0 (en) Telephone exchange
JPS57101997A (en) Voice alarm
JPS5798097A (en) Voice alarm
JPS56169989A (en) Multiplex line telephone set
GB2086190B (en) Repertory diallers
AU545644B2 (en) Telephone
IE800024L (en) Telephone set-dial unit
KR850000213Y1 (en) Telephone receiver
DE3174860D1 (en) Telephone exchange

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee